WO2021059623A1 - Élément de lentille, unité de lentille et procédé de production d'élément de lentille et d'unité de lentille - Google Patents

Élément de lentille, unité de lentille et procédé de production d'élément de lentille et d'unité de lentille Download PDF

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Publication number
WO2021059623A1
WO2021059623A1 PCT/JP2020/023677 JP2020023677W WO2021059623A1 WO 2021059623 A1 WO2021059623 A1 WO 2021059623A1 JP 2020023677 W JP2020023677 W JP 2020023677W WO 2021059623 A1 WO2021059623 A1 WO 2021059623A1
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WIPO (PCT)
Prior art keywords
lens
holding member
holding
adhesive
light
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PCT/JP2020/023677
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English (en)
Japanese (ja)
Inventor
充 富田
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日本電気硝子株式会社
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Filing date
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Publication of WO2021059623A1 publication Critical patent/WO2021059623A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/06—Joining glass to glass by processes other than fusing
    • C03C27/10—Joining glass to glass by processes other than fusing with the aid of adhesive specially adapted for that purpose
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
    • C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/12—Silica-free oxide glass compositions
    • C03C3/253—Silica-free oxide glass compositions containing germanium
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses

Definitions

  • the present invention relates to a lens member and a lens unit, and a method for manufacturing the lens member and the lens unit.
  • Germanium and silicon are suitable as lens materials because they have a high refractive index in the infrared region and a small wavelength dispersion.
  • germanium or silicon is used as a lens material, it is difficult to process it into a complicated shape such as an aspherical shape, a Fresnel lens shape, or a lens array shape.
  • zinc selenide, zinc sulfide, etc. are also used as other infrared transmissive materials.
  • these materials are toxic substances and are regarded as a problem from the viewpoint of environmental load.
  • chalcogenide glass containing germanium is known as a material preferably used for a lens.
  • Calcogenide glass is excellent in terms of mass productivity and cost reduction because it not only has infrared transmittance but also can be molded by mold press molding.
  • Patent Document 1 describes an example of a lens unit for a far-infrared camera.
  • chalcogenide glass or the like is used for the lens. Therefore, the lens hardly transmits visible light or ultraviolet rays.
  • the lens is bonded to the lens barrel with a photocurable adhesive.
  • the lens barrel has a transmitting portion that transmits ultraviolet rays or visible light. Glass or an amorphous resin material is used for the transparent portion.
  • the support member such as the lens barrel is in contact with the outside, so high strength is required. Therefore, a metal material is often used for the lens barrel, and it is difficult for the lens barrel to transmit visible light or ultraviolet rays. Therefore, it is difficult to join the lens and the lens barrel with a photocurable adhesive.
  • the lens barrel has a transmissive portion made of glass or resin. Therefore, it is difficult to sufficiently increase the strength of the lens unit.
  • the lens may be misaligned or eccentric due to the difference in thermal expansion between the lens and the lens barrel.
  • the lens member of the present invention is made of chalcogenide glass, includes a lens having a side surface and a holding member having a holding portion that holds at least a part of the side surface of the lens, and the holding member is ultraviolet light or It is characterized in that it is composed of a light-transmitting material that transmits visible light.
  • the transmittance of the material is the internal transmittance at which light having a wavelength of 365 nm transmits the material having a thickness of 10 mm
  • the transmittance of the light-transmitting material is preferably 75% or more.
  • the light-transmitting material in mass%, SiO 2 50% ⁇ 80 %, Al 2 O 3 5% ⁇ 30%, B 2 O 3 0% ⁇ 15%, Na 2 O 1% ⁇ 20%, K 2 It preferably contains O 0% to 10%.
  • the holding member has an inner side surface, the holding portion of the holding member is located on the inner side surface, and the holding member holds the entire circumference of the side surface of the lens.
  • the holding member holds the side surface of the lens by press joining.
  • a reflective film provided on the holding portion of the holding member is further provided, and the reflective film is located between the holding member and the lens.
  • the holding member has a ring shape.
  • the holding member has an end face connected to the surface including the holding portion, and further includes an antireflection film provided on the end face.
  • the holding member has an outer surface and an end surface connected to the outer surface, and the outer surface is provided with a notch portion leading to the end surface.
  • a plurality of notches are provided on the outer surface of the holding member, and the plurality of notches are arranged so as to have rotational symmetry.
  • the lens contains 0% to 50% of Ge (however, 0% is not included) and 4% to 80% of Te in mol%.
  • the lens has a curved lens portion and the surface of the lens portion is an unpolished surface.
  • the lens unit of the present invention includes the lens member, a support member that supports the holding member of the lens member, and an adhesive layer that joins the support member and the holding member, and the adhesive layer is photocured. It is characterized by being composed of a sex resin.
  • the holding member has an outer surface
  • the support member has a tubular shape, and has an inner surface
  • an adhesive layer joins the entire circumference of the outer surface of the holding member and the inner surface of the support member. Is preferable.
  • the method for manufacturing a lens member of the present invention is the above-mentioned method for manufacturing a lens member, which includes a step of preparing a holding member and a step of joining a lens to the holding member, and in the step of joining the lens, press molding is performed. It is characterized in that the lens is joined to the holding member by forming the lens in contact with the holding portion of the holding member.
  • the holding member has a ring shape and the lens is joined to the holding member by forming the lens in the holding member by press molding in the step of joining the lens.
  • the method for manufacturing a lens unit of the present invention is the above-mentioned method for manufacturing a lens unit, in which an adhesive is placed between a step of preparing a lens member and a support member and a holding member and a support member of the lens member. It includes an agent placement step and a curing step of joining the lens member and the support member by forming an adhesive layer by curing the adhesive, and in the curing step, the holding member receives ultraviolet light or visible light. It is characterized in that the adhesive is photocured by transmitting and irradiating the adhesive.
  • a lens member a lens unit using the lens member, and a method for manufacturing the lens member and the lens unit, which can be easily joined to the support member and are less likely to cause misalignment at the time of joining. be able to.
  • FIG. 1 is a front sectional view of a lens member according to the first embodiment of the present invention.
  • FIG. 2 is a plan view of the lens member according to the first embodiment of the present invention.
  • FIG. 3 is a plan view of the lens member according to the modified example of the first embodiment of the present invention.
  • FIG. 4 is a front sectional view of the lens unit according to the second embodiment of the present invention.
  • FIG. 5 is a front sectional view of the lens unit according to the first modification of the second embodiment of the present invention.
  • FIG. 6 is a plan view of the lens unit according to the second modification of the second embodiment of the present invention.
  • FIG. 7 (a) and 7 (b) are plan views for explaining an example of a step of forming a holding member in the method for manufacturing a lens member according to the first embodiment of the present invention.
  • FIG. 8 is a front sectional view for explaining a step of forming an antireflection film and an antireflection film in the method for manufacturing a lens member according to the first embodiment of the present invention.
  • FIG. 9 is a front sectional view for explaining an example of a lens forming step in the method for manufacturing a lens member according to the first embodiment of the present invention.
  • FIG. 10 is a front sectional view for explaining an example of press working of a lens in the method for manufacturing a lens member according to the first embodiment of the present invention.
  • FIG. 11 is an enlarged front sectional view for explaining an example of a method for manufacturing a lens unit according to a second embodiment of the present invention.
  • FIG. 1 is a front sectional view of a lens member according to the first embodiment of the present invention.
  • FIG. 2 is a plan view of the lens member according to the first embodiment of the present invention.
  • the lens member 1 includes a lens 2 and a holding member 3 that holds the lens 2.
  • the lens 2 has a side surface 2b and a curved lens portion 2a.
  • the lens portion 2a is convex.
  • the lens 2 is a convex lens.
  • the lens 2 may be a concave lens.
  • the lens 2 is made of chalcogenide glass.
  • the lens 2 preferably transmits infrared rays. Therefore, the lens member 1 of the present embodiment is suitably used for an infrared optical device.
  • the lens 2 hardly transmits ultraviolet light and visible light.
  • the holding member 3 has a ring shape.
  • the holding member 3 has an inner side surface 3a and an outer surface 3b, and a first open end surface 3c and a second open end surface 3d connected to the inner side surface 3a and the outer surface 3b.
  • the holding member 3 has a holding portion 3X that holds the lens 2.
  • the holding portion 3X of the holding member 3 is located on the inner side surface 3a.
  • the holding member 3 holds the side surface 2b of the lens 2 by the holding portion 3X.
  • the holding member 3 holds the entire circumference of the side surface 2b of the lens 2.
  • the first aperture end surface 3c is located on the lens portion 2a side of the lens 2.
  • the shape of the holding member 3 is not limited to the ring shape.
  • the holding member 3 may hold at least a part of the side surface 2b of the lens 2.
  • the lens 2 of the present embodiment is formed by pressing the glass base material in the holding member 3. Since the lens 2 and the holding member 3 are press-bonded, the holding member 3 holds the lens 2.
  • the press joining in the present specification means that the side surface 2b of the lens 2 is formed into a lens shape by pressing the base material of the lens 2 arranged in the holding member 3, and the inner side surface 3a of the holding member 3 is formed. It means that the lens 2 and the holding member 3 are joined by pressure contacting the lens 2.
  • the holding member 3 and the side surface 2b of the lens 2 are joined by contacting each other without using an adhesive. In this way, the lens 2 is joined to the holding member 3 without using an adhesive or the like.
  • the surface and side surfaces 2b of the lens portion 2a of the lens 2 are formed by press molding.
  • the surface of the lens portion 2a is an unpolished surface, and the arithmetic average roughness Ra is 0.001 ⁇ m or more and 1 ⁇ m or less.
  • the arithmetic mean roughness Ra in the present specification is based on JIS B 0601: 2013.
  • the method of forming the lens 2 is not limited to the above.
  • the holding member 3 is made of a light-transmitting material that transmits ultraviolet light or visible light.
  • the holding member 3 is made of glass.
  • the material of the holding member 3 is not limited to glass, and an appropriate resin or the like, which is a light-transmitting material, can also be used.
  • the lens member 1 is used for a lens unit having a support member such as a lens barrel. Specifically, the holding member 3 of the lens member 1 and the support member in the lens unit are joined by an adhesive layer.
  • the adhesive layer is formed by photocuring an adhesive composed of a photocurable resin.
  • the lens member 1 has a reflective film 4 provided on the inner side surface 3a of the holding member 3 and an antireflection film provided on the first open end surface 3c of the holding member 3. 5 and.
  • the reflective film 4 is located between the holding member 3 and the lens 2.
  • the reflective film 4 reflects ultraviolet light or visible light.
  • the reflective film 4 is made of an appropriate metal material, ceramic material, or the like.
  • the lens member 1 does not necessarily have to have the reflective film 4.
  • the antireflection film 5 is a film that does not easily reflect ultraviolet light or visible light.
  • the antireflection film 5 is made of, for example, a dielectric multilayer film. More specifically, as the antireflection film 5, for example, a dielectric film composed of silicon oxide, aluminum oxide, boron oxide, hafnium oxide and the like can be used.
  • ultraviolet light or visible light is incident on, for example, from the first opening end surface 3c of the holding member 3. Since the antireflection film 5 is provided on the first opening end surface 3c, ultraviolet light or visible light can be more reliably incident on the holding member 3.
  • the lens member 1 does not necessarily have the antireflection film 5.
  • the size of the lens member 1 is not particularly limited, but in the present embodiment, the diameter is about 10 mm or more and 50 mm or less, and the height is about 5 mm or more and 25 mm or less. In the present specification, the height of the lens member means the dimension of the lens member along the optical axis direction of the lens member.
  • the feature of this embodiment is that the lens 2 made of chalcogenide glass is held by the holding member 3, and the holding member 3 is made of a light transmitting material.
  • the holding member 3 is made of a light transmitting material, ultraviolet light or visible light is emitted from the holding member 3 even when the supporting member in the lens unit is made of a metal material. It can be incident. Therefore, when joining the lens member 1 and the support member, the adhesive made of a photocurable resin can be easily irradiated with ultraviolet light or visible light through the holding member 3. As a result, the adhesive can be easily photo-cured, and the lens member 1 and the support member can be easily joined.
  • the above-mentioned bonding is a bonding by photocuring of the adhesive, it does not involve thermal expansion or the like. Therefore, when the lens member 1 and the support member are joined, the position of the lens member 1 is unlikely to shift, and the eccentricity of the lens 2 is unlikely to occur.
  • transmitting ultraviolet light means that the internal transmittance of the material having a thickness of 10 mm with respect to light having a wavelength of 365 nm is 50% or more.
  • transmitting visible light means that the average value of the internal transmittance of the material having a thickness of 10 mm with respect to light in each wavelength band having a wavelength of 450 nm to 700 nm is 70% or more.
  • the transmittance is the internal transmittance at which light having a wavelength of 365 nm transmits the material having a thickness of 10 mm
  • the transmittance of the light-transmitting material used for the holding member 3 is 75% or more. preferable.
  • an ultraviolet photocurable resin is used as the adhesive for joining the lens member 1 and the support member, the lens member 1 and the support member can be joined more easily and more reliably. it can.
  • the lens member 1 has a reflective film 4.
  • the ultraviolet light or visible light incident on the holding member 3 can be reflected by the reflective film 4 toward the support member and the adhesive side.
  • the lens member 1 and the support member can be easily and more reliably joined.
  • the reflective film 4 is provided between the holding member 3 and the lens 2, it is possible to suppress the irradiation of the lens 2 with ultraviolet light or visible light. Therefore, deterioration of the lens 2 and the like can be suppressed more reliably.
  • the reflective film 4 is provided on the entire surface of the inner side surface 3a of the holding member 3.
  • the ultraviolet light or visible light incident on the holding member 3 can be effectively reflected by the reflective film 4 toward the support member and the adhesive side. Therefore, the lens member 1 and the support member can be joined more easily and more reliably.
  • it is difficult for the ultraviolet light or visible light incident on the holding member 3 to be emitted from the inner side surface 3a side it is possible to more reliably suppress the irradiation of the lens 2 with the ultraviolet light or visible light. Therefore, deterioration of the lens 2 and the like can be suppressed more reliably.
  • the lens member 1 preferably has an antireflection film 5.
  • ultraviolet light or visible light can be more reliably incident on the holding member 3. Therefore, the adhesive can be more easily and more reliably irradiated with ultraviolet light or visible light.
  • the antireflection film 5 is provided on the first opening end surface 3c, and ultraviolet light or visible light is incident on the holding member 3 from the first opening end surface 3c.
  • the antireflection film 5 may be provided at a portion of the holding member 3 where ultraviolet light or visible light is incident.
  • the antireflection film 5 can be provided on the second opening end surface 3d. In this case, the antireflection film may not be provided on the first opening end surface 3c.
  • the shape of the holding member is not limited to the ring shape.
  • the holding member may be cylindrical.
  • the holding member may be tubular, the shape on the inner side surface side in a plan view may be circular, and the shape on the outer side surface side may be polygonal.
  • the holding member may have a holding portion that holds at least a part of the side surface of the lens. Even when the holding member is not ring-shaped, it is preferable that the reflective film is provided on the holding portion.
  • the holding member may have a shape having an end surface such as an open end surface connected to the holding portion, in addition to the example of the shape described above. In this case, it is preferable that the end face is provided with an antireflection film.
  • the holding member 3 is made of chemically strengthened glass having light transmission. More specifically, the entire surface of the holding member 3 is made of chemically strengthened glass including a compressive stress layer.
  • the compressive stress layer has a compressive stress value of 300 MPa or more.
  • the entire surface means the entire surface of the holding member 3 facing the outside. In the present embodiment, the entire surface means the inner side surface 3a, the outer side surface 3b, the first opening end surface 3c, and the second opening end surface 3d of the holding member 3.
  • Chemically tempered glass can be formed by an ion exchange method. Since the holding member 3 of the lens member 1 is made of chemically strengthened glass, the holding member 3 is not easily damaged. However, the holding member 3 may be made of a light-transmitting material, and chemically strengthened glass may not be used as the material of the holding member 3.
  • Chemically strengthened glass constituting the holding member 3 is the mass%, SiO 2 50% ⁇ 80 %, Al 2 O 3 5% ⁇ 30%, B 2 O 3 0% ⁇ 15%, Na 2 O 1% ⁇ 20 %, K 2 O 0% to 10%.
  • the composition of the holding member 3 is not limited to the above. In the present specification, unless otherwise specified, for example, 50% to 80% means 50% or more and 80% or less.
  • “%” means "mass%”.
  • SiO 2 is a component that forms a network of glass.
  • the content of SiO 2 is preferably 50% to 80%, more preferably 52% to 75%, further preferably 55% to 72%, and 55% to 70%. Is more preferable, and 55% to 67.5% is particularly preferable. If the content of SiO 2 is too small, it becomes difficult to vitrify. In addition, if the coefficient of thermal expansion becomes too high, the thermal shock resistance tends to decrease. On the other hand, if the content of SiO 2 is too large, the meltability and moldability tend to decrease.
  • Al 2 O 3 is a component that enhances ion exchange performance. Further, Al 2 O 3 is a component that increases the strain point and Young's modulus.
  • the content of Al 2 O 3 is preferably 5% to 25%. If the content of Al 2 O 3 is too small, the coefficient of thermal expansion becomes too high, and the thermal shock resistance tends to decrease. In addition, there is a risk that the ion exchange performance cannot be fully exhibited. Therefore, the preferable lower limit range of Al 2 O 3 is preferably 7% or more, more preferably 8% or more, further preferably 10% or more, and further preferably 12% or more. It is preferably 14% or more, more preferably 15% or more, and particularly preferably 16% or more.
  • the upper limit range of Al 2 O 3 is preferably 22% or less, more preferably 20% or less, further preferably 19% or less, still more preferably 18% or less. It is particularly preferably 17% or less.
  • B 2 O 3 is a component that lowers the liquidus temperature by lowering the high-temperature viscosity and density and stabilizing the glass to make it difficult for crystals to precipitate.
  • B 2 O 3 is a component that enhances crack resistance.
  • the ion exchange treatment may cause surface coloring called discoloration, decrease water resistance, decrease the compressive stress value of the compressive stress layer, or compress. The stress depth of the stress layer tends to decrease. Therefore, the content of B 2 O 3 is preferably 0.1% to 15%, more preferably 0.1% to 12%, and further preferably 0.1% to 10%. It is more preferably 0.1% to 8%, further preferably 0.1 to 6%, and even more preferably 0.1% to 5%.
  • Na 2 O is a major ion exchange component.
  • Na 2 O is a component that enhances meltability and moldability by reducing high-temperature viscosity.
  • Na 2 O is also a component that improves devitrification resistance.
  • the Na 2 O content is preferably 1% to 20%. If the content of Na 2 O is too small, the meltability is lowered, the coefficient of thermal expansion is lowered, and the ion exchange performance is likely to be lowered. Therefore, when Na 2 O is introduced, the lower limit range of Na 2 O is preferably 10% or more, more preferably 11% or more, and particularly preferably 12% or more.
  • the upper limit range of Na 2 O is preferably 17% or less, and particularly preferably 16% or less.
  • K 2 O is a component that promotes ion exchange, and is a component that has a large effect of increasing the stress depth of the compressive stress layer among alkali metal oxides. Further, K 2 O is a component that enhances meltability and moldability by reducing high-temperature viscosity. Further, K 2 O is also a component improving devitrification resistance.
  • the K 2 O content is preferably 0% to 10%. If the content of K 2 O is too large, the coefficient of thermal expansion becomes too high, so that the thermal shock resistance is lowered and it becomes difficult to match the coefficient of thermal expansion of the peripheral materials. Also, the strain point may drop too much. Further, the component balance of the glass composition may be lost, and the devitrification resistance may be lowered. Therefore, the upper limit range of K 2 O is preferably at most 8%, more preferably at most 6%, more preferably 4% or less, and particularly preferably less than 2%.
  • the following components may be introduced into the holding member 3.
  • Li 2 O is an ion exchange component and a component that enhances meltability and moldability by lowering high-temperature viscosity.
  • Li 2 O is a component that increases Young's modulus.
  • Li 2 O has a large effect of increasing the compressive stress value among the alkali metal oxides.
  • the content of Li 2 O is preferably 0% to 3.5%, more preferably 0% to 2%, further preferably 0% to 1%, and 0% to 0%. It is more preferably 0.5%, and particularly preferably 0.01% to 0.2%.
  • the total content of A, B and C may be described as "content of A + B + C" or "A + B + C".
  • the content of Li 2 O + Na 2 O + K 2 O is preferably 5% to 25%, more preferably 10% to 22%, further preferably 15% to 22%, and 17% to 17%. It is particularly preferably 22%. If the content of Li 2 O + Na 2 O + K 2 O is too small, the ion exchange performance and meltability tend to deteriorate. On the other hand, if the content of Li 2 O + Na 2 O + K 2 O is too large, the glass tends to be devitrified.
  • the thermal shock resistance may decrease or it may be difficult to match the coefficient of thermal expansion of the peripheral materials. Further, if the strain point is lowered too much, it may be difficult to obtain a high compressive stress value. Further, it may be difficult to secure a high liquidus viscosity due to a decrease in viscosity near the liquidus temperature.
  • MgO is a component that enhances meltability and moldability, and increases strain point and Young's modulus by lowering high-temperature viscosity. Further, MgO is a component having a large effect of enhancing the ion exchange performance among alkaline earth metal oxides. However, if the content of MgO is too large, the density and the coefficient of thermal expansion tend to be high, and the glass tends to be devitrified. Therefore, the upper limit range of the MgO content is preferably 12% or less, more preferably 10% or less, further preferably 8% or less, still more preferably 5% or less. It is particularly preferably 4% or less. When MgO is introduced into the glass composition, the lower limit of the MgO content is preferably 0.1% or more, more preferably 0.5% or more, and more preferably 1% or more. Is more preferable, and 2% or more is particularly preferable.
  • CaO Compared with other components, CaO has a large effect of increasing meltability and moldability, and an effect of increasing strain point and Young's modulus by lowering high-temperature viscosity without lowering devitrification resistance. ..
  • the CaO content is preferably 0% to 10%. However, if the CaO content is too high, the density and coefficient of thermal expansion may increase. Further, the lack of the component balance of the glass composition may make the glass more likely to be devitrified. Further, the ion exchange performance may be easily deteriorated. Therefore, the CaO content is preferably 0% to 5%, more preferably 0.01% to 4%, still more preferably 0.1% to 3%, and 1% to 1%. It is particularly preferably 2.5%.
  • SrO is a component that enhances meltability and adult form, and enhances strain point and Young's modulus by lowering high-temperature viscosity without lowering devitrification resistance. However, if the content of SrO is too large, the density and the coefficient of thermal expansion may increase, and the ion exchange performance may decrease. Further, the lack of the component balance of the glass composition may make the glass more likely to be devitrified.
  • the content of SrO is preferably 0% to 5%, more preferably 0% to 3%, further preferably 0% to 1%, and 0% to 0.1% (however). It is particularly preferable that it does not contain 0.1%).
  • BaO is a component that enhances meltability and moldability, and increases strain point and Young's modulus by lowering high-temperature viscosity without lowering devitrification resistance.
  • the content range of BaO is preferably 0% to 5%, more preferably 0% to 3%, further preferably 0% to 1%, and 0% to 0.1% (however). It is particularly preferable that it does not contain 0.1%).
  • ZnO is a component that enhances ion exchange performance, and is a component that has a particularly large effect of increasing the compressive stress value. Further, ZnO is a component that lowers the high temperature viscosity without lowering the low temperature viscosity. However, if the ZnO content is too high, the glass tends to be phase-separated, the devitrification resistance is lowered, the density is high, and the stress depth of the compressive stress layer is low. Therefore, the ZnO content is preferably 0% to 6%, more preferably 0% to 5%, further preferably 0% to 1%, and 0% to 0.5%. Is more preferable, and 0% to 0.1% (however, 0.1% is not included) is particularly preferable.
  • ZrO 2 is a component that remarkably enhances the ion exchange performance and also a component that enhances the viscosity and strain point near the liquidus viscosity. However, if the content of ZrO 2 is too large, the devitrification resistance may be significantly lowered. Also, the density may be too high. Therefore, the upper limit range of ZrO 2 is preferably 10% or less, more preferably 8% or less, further preferably 6% or less, and particularly preferably 5% or less. If it is desired to improve the ion exchange performance, it is preferable to introduce ZrO 2 into the glass composition. In that case, the lower limit range of ZrO 2 is preferably 0.001% or more, more preferably 0.01% or more, further preferably 0.5% or more, and 1% or more. Is particularly preferred.
  • P 2 O 5 is a component that enhances the ion exchange performance, and in particular, is a component that increases the stress depth of the compressive stress layer.
  • the upper limit range of P 2 O 5 is preferably 10% or less, more preferably 8% or less, further preferably 6% or less, still more preferably 4% or less. It is more preferably 2% or less, further preferably 1% or less, and particularly preferably less than 0.1%.
  • one or more selected from the group of As 2 O 3 , Sb 2 O 3 , SnO 2 , F, Cl, SO 3 is 0 ppm or more. 30000 ppm (3%) may be introduced.
  • the content of SnO 2 + SO 3 + Cl is preferably 0 ppm to 10000 ppm (but not including 0 ppm), more preferably 50 ppm to 5000 ppm, and 80 ppm to 4000 ppm, from the viewpoint of accurately enjoying the clarification effect. It is more preferably 100 ppm to 3000 ppm, and particularly preferably 300 ppm to 3000 ppm.
  • the content of SnO 2 is preferably 0 ppm to 10000 ppm, more preferably 0 ppm to 7000 ppm, and particularly preferably 50 ppm to 6000 ppm.
  • the Cl content is preferably 0 ppm to 1500 ppm, more preferably 0 ppm to 1200 ppm, further preferably 0 ppm to 800 ppm, further preferably 0 ppm to 500 ppm, and even more preferably 50 ppm to 300 ppm. Is particularly preferable.
  • the content of SO 3 is preferably 0 ppm to 1000 ppm, more preferably 0 ppm to 800 ppm, and particularly preferably 10 ppm to 500 ppm.
  • Rare earth oxides such as Nd 2 O 3 and La 2 O 3 are components that increase Young's modulus. Further, the rare earth oxide is a component capable of controlling the tint of glass by decolorizing it when a complementary color is added. However, the cost of the raw material itself of the rare earth oxide is high, and when it is introduced in a large amount, the devitrification resistance tends to decrease. Therefore, the content of the rare earth oxide is preferably 4% or less, more preferably 3% or less, further preferably 2% or less, still more preferably 1% or less. It is particularly preferably 0.5% or less.
  • the holding member in the present invention preferably does not substantially contain As 2 O 3 , F, PbO, and Bi 2 O 3.
  • substantially not contained means that although it is not positively added as a glass component, it is allowed to be mixed at an impurity level. Specifically, it means that the content of each component is less than 500 ppm.
  • the lens 2 is made of chalcogenide glass, and preferably contains 0% to 50% of Ge (however, 0% is not included) and 4% to 80% of Te as a glass composition in mol%.
  • Lens 2 is mol%, Ge 0% to 50% (but not including 0%), Te 4% to 80%, Sn + Ag + Cu + Bi + Sb 0% to 50% (but not including 0%), and F + Cl + Br + I 0% to It is more preferable to contain 50%.
  • the lens 2 may contain 0% to 50% of Ge (however, 0% is not included) and 4% to 80% of Te in mol%.
  • “%" means "mol%”.
  • Ge is an essential component for forming a glass skeleton.
  • the content of Ge is 0% to 50% (but not including 0%), preferably 1% to 40%, more preferably 2% to 30%, and 5% to 25%. Is more preferable. If the content of Ge is too small, it becomes difficult to vitrify. On the other hand, if the content of Ge is too large, Ge-based crystals tend to precipitate and the raw material cost tends to increase.
  • Te which is an element of chalcogen, is an essential component that forms a glass skeleton.
  • the content of Te is 4% to 80%, preferably 10% to 75%, and more preferably 20% to 70%. If the content of Te is too small, it becomes difficult to vitrify. On the other hand, if the content of Te is too large, Te-based crystals are likely to precipitate.
  • Sn, Ag, Cu, Bi and Sb are components that enhance the thermal stability of glass.
  • the content of Sn + Ag + Cu + Bi + Sb is 0% to 50%, preferably 1% to 40%, more preferably 2% to 30%, further preferably 3% to 25%, and 5%. It is particularly preferably% to 20%. If the content of Sn + Ag + Cu + Bi + Sb is too small or too large, it becomes difficult to vitrify.
  • the content of each component of Sn, Ag, Cu, Bi, and Sb is 0% to 50%, preferably 0% to 50% (however, 0% is not included), and 1% to 1%. It is more preferably 40%, further preferably 2% to 30%, particularly preferably 3% to 25%, and most preferably 5% to 20%. Above all, it is preferable to use Ag and Sn because the effect of enhancing the thermal stability of the glass is particularly large.
  • F, Cl, Br, and I are also components that enhance the thermal stability of glass.
  • the content of F, Cl, Br, I is 0% to 50%, preferably 1% to 40%, more preferably 1% to 30%, and 1% to 25%. Is more preferable, and 1% to 20% is particularly preferable. If the content of F + Cl + Br + I is too large, it becomes difficult to vitrify and the weather resistance tends to decrease.
  • the content of each component of F, Cl, Br, and I is 0% to 50%, preferably 1% to 40%, and more preferably 1% to 30%. It is more preferably% to 25%, and particularly preferably 1% to 20%. Among them, it is preferable to use I because an elemental raw material can be used and the effect of enhancing glass stability is particularly large.
  • the lens 2 can contain the following components in addition to the above components.
  • Zn, In, Ga and P are components that widen the vitrification range and enhance the thermal stability of glass.
  • the content of each component of Zn, In, Ga and P is preferably 0% to 20%, more preferably 0.5% to 10%, respectively. If the content of these components is too high, it becomes difficult to vitrify. Since Ga has a high cost, its content is preferably 10% or less, more preferably 5% or less, and particularly preferably not substantially contained.
  • Se and As are components that expand the vitrification range and enhance the thermal stability of glass.
  • the content thereof is preferably 0% to 10%, more preferably 0.5% to 5%, respectively.
  • these substances are toxic, it is preferable that they are not substantially contained from the viewpoint of reducing the influence on the environment and the human body as described above.
  • the lens 2 in the present invention does not substantially contain toxic substances Cd, Tl and Pb.
  • FIG. 3 is a plan view of the lens member according to the modified example of the first embodiment of the present invention.
  • the holding member 23 has a plurality of notches 23e provided on the outer surface 23b.
  • the cutout portion 23e reaches from the first opening end surface 3c to the second opening end surface 3d.
  • the cutout portion 23e does not necessarily have to reach the first opening end surface 3c and the second opening end surface 3d.
  • the cutout portion 23e is formed of a flat surface, but may be formed of, for example, a curved surface or a concave groove.
  • the lens member 21 does not have the reflection film 4 and the antireflection film 5.
  • the lens member 21 may have the reflection film 4 and the antireflection film 5 as in the first embodiment.
  • a gap region can be suitably provided between the support member of the lens unit and the outer surface 3b of the holding member 23 (FIG. 6 described later). It is preferable that the cutout portion 23e reaches at least one of the first open end surface 3c and the second open end surface 3d. In this case, since the gap region is open to the first open end surface 3c side or the second open end surface 3d side, the adhesive can be easily flowed in. In addition, as in the first embodiment, since the holding member 23 is made of a light transmitting material, ultraviolet light or visible light can be easily and more reliably irradiated to the adhesive. Therefore, the lens member 21 and the support member can be joined more easily.
  • At least one notch portion 23e may be provided.
  • the holding member 23 is made of glass, even if the notch portion 23e is provided, burrs are unlikely to occur in the vicinity of the notch portion 23e. Therefore, the stress due to the temperature change or the like can be relieved as described above without inviting the situation that the lens 2 is damaged by the burr. Therefore, it is possible to more reliably prevent the lens member 21 from being damaged.
  • the plurality of cutout portions 23e are provided at 90 ° intervals in the circumferential direction of the outer surface 3b, and are arranged so as to be rotationally symmetric four times around the axis of the lens member 21. In this way, it is preferable that the plurality of notches 23e are arranged so as to have rotational symmetry. As a result, the holding member 23 is less likely to be distorted.
  • the plurality of cutout portions 23e may be arranged so as to be rotationally symmetric three times, or may be arranged so as to be rotationally symmetric six times, for example.
  • FIG. 4 is a front sectional view of the lens unit according to the second embodiment of the present invention.
  • the lens unit 30 includes a lens member 1 of the first embodiment, a support member 34 that supports the lens member 1, and an adhesive layer 35 that joins the support member 34 and the holding member 3.
  • the support member 34 has a tubular shape.
  • the support member 34 has an inner side surface 34a.
  • the support member 34 supports the outer surface 3b of the holding member 3 on the inner side surface 34a.
  • the shape of the support member 34 is not limited to the above. It is preferable to use a high-strength material such as ceramics or metal for the support member 34. More specifically, it is preferable to use, for example, fine ceramics, various metals such as KOVER alloy, austenite stainless steel, ferrite stainless steel, and martensitic stainless steel for the support member 34. Thereby, the strength of the lens unit can be effectively increased.
  • the adhesive layer 35 is provided between the outer surface 3b of the holding member 3 and the inner surface 34a of the support member 34. As a result, the holding member 3 and the supporting member 34 are joined to each other, and the supporting member 34 supports the holding member 3. Specifically, the adhesive layer 35 joins the entire circumference of the outer surface 3b of the holding member 3 and the inner side surface 34a of the support member 34.
  • the adhesive layer 35 is made of a photocurable resin. Specifically, for the adhesive layer 35, for example, an epoxy resin, an acrylic resin, a silicone resin, or the like can be used.
  • the lens unit 30 of the present embodiment has the lens member 1 of the first embodiment. Therefore, the holding member 3 of the lens member 1 and the supporting member 34 can be easily and more reliably joined. In addition, since the above-mentioned joining can be performed without being limited to the material of the support member 34, a material having high strength can be adopted for the support member 34. Therefore, the strength of the lens unit 30 can be effectively increased. Further, since the joining is accompanied by thermal expansion and the like, the position of the lens member 1 is unlikely to shift, and the eccentricity of the lens 2 is unlikely to occur.
  • FIG. 5 is a front sectional view of the lens unit according to the first modification of the second embodiment of the present invention.
  • the support member 44 has an extension portion 44f extending radially inward from the inner side surface 34a.
  • the second open end surface 3d of the holding member 3 is joined to the extension portion 44f of the support member 44 by an adhesive layer 35.
  • the outer surface 3b of the holding member 3 is also joined to the inner surface 34a of the support member 44 by the adhesive layer 35.
  • the lens member 1 can be easily joined to the support member, and the position shift is unlikely to occur at the time of joining.
  • FIG. 6 is a plan view of the lens unit according to the second modification of the second embodiment of the present invention.
  • the adhesive layer is shown by hatching.
  • the lens member 21 according to the modification of the first embodiment is used.
  • the lens unit 50 has a plurality of gap regions D located between the plurality of notches 23e of the holding member 23 of the lens member 21 and the support member 34.
  • An adhesive layer 35 is provided in each gap region D.
  • the adhesive can be easily flowed into each gap region D.
  • the holding member 23 is made of a light-transmitting material, ultraviolet light or visible light can be transmitted through the holding member 23 to easily irradiate the adhesive arranged in each gap region D. Therefore, productivity can be increased.
  • the stress applied from the support member 34 to the holding member 23 due to a temperature change or the like can be relieved. Therefore, damage to the lens member 21 of the lens unit 50 can be effectively suppressed.
  • the adhesive layer 35 is provided only in each gap region D between the outer surface 23b of the holding member 23 and the support member 34. In this way, a part of the outer surface 23b of the holding member 23 and the support member 34 may be joined by the adhesive layer 35.
  • the adhesive layer 35 may be provided in a portion other than each gap region D between the outer surface 23b of the holding member 23 and the support member 34.
  • FIG. 7 (a) and 7 (b) are plan views for explaining an example of a step of forming a holding member in the method for manufacturing a lens member according to the first embodiment of the present invention.
  • FIG. 8 is a front sectional view for explaining a step of forming an antireflection film and an antireflection film in the method for manufacturing a lens member according to the first embodiment of the present invention.
  • FIG. 9 is a front sectional view for explaining an example of a lens forming step in the method for manufacturing a lens member according to the first embodiment of the present invention.
  • FIG. 10 is a front sectional view for explaining an example of press working of a lens in the method for manufacturing a lens member according to the first embodiment of the present invention.
  • FIG. 7B the compressive stress layer on the surface of the holding member 3 is shown by hatching.
  • a ring-shaped glass member 63 made of a light-transmitting material is prepared.
  • the glass member 63 is strengthened by the ion exchange method. Specifically, the glass member 63 is immersed in a KNO 3 molten salt at 350 ° C. to 450 ° C. for 1 hour to 5 hours for ion exchange. The above immersion may be repeated about 1 to 3 times. By the above immersion, ion exchange proceeds on the entire surface of the glass member 63, and a compressive stress layer is formed. In this way, the entire surface of the glass member 63 is chemically strengthened by ion exchange. As a result, as shown in FIG. 7B, the holding member 3 made of chemically strengthened glass is obtained.
  • the ion exchange may be repeated twice or more under different conditions.
  • the first ion exchange is immersed in a NaNO 3 molten salt at 350 ° C. to 450 ° C. or a mixed molten salt of NaNO 3 and KNO 3 for 1 hour to 4 hours
  • the second ion exchange is 400 ° C. to 490 ° C. It may be immersed in the KNO 3 molten salt of No. 1 for 0.1 to 2 hours.
  • the conditions for chemical strengthening are not limited to the above.
  • the chemical strengthening step does not necessarily have to be performed, and the glass member 63 may be used as the holding member 3 in an unreinforced state. However, by performing the chemical strengthening step, it is possible to prevent the holding member 3 from being damaged.
  • a reflective film 4 is formed on the inner side surface 3a of the holding member 3.
  • the antireflection film 5 is formed on the first open end surface 3c of the holding member 3.
  • the reflective film 4 and the antireflection film 5 can be formed, for example, by a sputtering method, a vacuum vapor deposition method, or the like.
  • a substantially spherical glass base material 62 made of chalcogenide glass is prepared.
  • the lens forming step is performed by pressing the glass base material 62 with the first mold material 66, the second mold material 67, and the third mold material 68.
  • the first mold member 66 has a mold member arranging portion 66A and a protruding portion 66B.
  • a second mold member 67 is arranged in the mold member arrangement portion 66A.
  • the protruding portion 66B is surrounded by the mold material arranging portion 66A.
  • the protruding portion 66B includes a holding member arranging portion 66c and a molding portion 66d.
  • the holding member 3 is arranged in the holding member arranging portion 66c.
  • the molding portion 66d is a portion for molding the lens 2 and has a curved shape.
  • the second mold member 67 has a tubular shape.
  • the second mold member 67 has a through hole 67a.
  • the third mold material 68 has a centrally located protrusion 68B.
  • the shapes of the protruding portion 66B of the first mold member 66, the through hole 67a of the second mold member 67, and the third mold member 68 are substantially the same.
  • the shapes of the protruding portion 68B of the third mold member 68 and the inner side surface 3a of the holding member 3 are substantially the same.
  • the second mold material 67 is arranged on the mold material arrangement portion 66A of the first mold material 66. At this time, the protruding portion 66B of the first mold material 66 and the through hole 67a of the second mold material are fitted.
  • the holding member 3 is arranged on the holding member arranging portion 66c of the first mold member 66.
  • the glass base material 62 is arranged on the molding portion 66d of the first mold material 66.
  • the third mold member 68 is inserted into the through hole 67a of the second mold member 67.
  • the glass base material 62 is heated so that the temperature is about 180 ° C. to 200 ° C.
  • the glass base material 62 is pressed by the third mold material 68.
  • the lens 2 is obtained by pressing the glass base material 62 as shown in FIG.
  • the temperature in press working is not limited to the above.
  • the lens 2 is formed in the holding member 3 so as to be in contact with the holding portion 3X. More specifically, the lens 2 is formed so as to indirectly contact the holding portion 3X via the reflective film 4. As a result, the lens 2 is indirectly bonded to the holding member 3 via the reflective film 4. Specifically, the lens 2 and the holding member 3 are press-joined. From the above, the lens member 1 is obtained.
  • the manufacturing method is an example, and the manufacturing method of the lens member 1 is not limited to the above.
  • the lens 2 may be formed so as to be in direct contact with the holding portion 3X by press molding. As a result, the lens 2 may be directly bonded to the holding member 3.
  • the first open end surface 3c of the holding member 3 is made of chemically strengthened glass.
  • the holding member 3 comes into contact with the first mold member 66 at the first opening end surface 3c. Since the first opening end surface 3c is made of chemically strengthened glass and has high strength, the holding member 3 is unlikely to be cracked or chipped when the lens 2 is formed.
  • FIG. 11 is an enlarged front sectional view for explaining an example of a method for manufacturing a lens unit according to a second embodiment of the present invention.
  • the adhesive 35A is applied to the outer surface 3b of the holding member 3 of the lens member 1 or the inner surface 34a of the support member 34 prepared separately.
  • the lens member 1 is inserted into the through hole of the support member 34.
  • the adhesive arranging step of arranging the adhesive 35A between the outer surface 3b of the holding member 3 of the lens member 1 and the inner surface 34a of the support member 34 is performed.
  • the adhesive 35A may flow between the outer surface 3b of the holding member 3 and the inner surface 34a of the support member 34.
  • a curing step of curing the adhesive 35A is performed. Specifically, the light L is incident from the first opening end surface 3c of the holding member 3. Light L is ultraviolet light or visible light. Light L is transmitted through the holding member 3 and irradiates the adhesive 35A arranged between the lens member 1 and the support member 34. Thereby, the adhesive 35A is photocured. As a result, the holding member 3 and the supporting member 34 of the lens member 1 are joined by forming the adhesive layer 35 shown in FIG. From the above, the lens unit 30 is obtained.
  • the adhesive 35A can be easily cured and the lens member 1 and the support member 34 can be easily cured. Can be joined.
  • the adhesive 35A is cured by photocuring, the displacement of the lens 2 due to thermal expansion or the like can be suppressed, and the eccentricity of the lens 2 can be suppressed.
  • the antireflection film 5 is provided on the first opening end surface 3c of the holding member 3 as in the present embodiment, the light L can be more reliably incident on the holding member 3.
  • the reflective film 4 is provided on the inner side surface 3a of the holding member 3, as shown in FIG. 11, the light L incident on the holding member 3 can be reflected to the adhesive 35A side. Therefore, the adhesive 35A can be photocured more reliably and more easily.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Glass Compositions (AREA)
  • Lens Barrels (AREA)
  • Surface Treatment Of Glass (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

L'invention concerne un élément de lentille qui peut être facilement assemblé avec un élément de support et qui est moins sujet à un mauvais alignement de position au moment de l'assemblage.　Cet élément de lentille comprend une lentille (2) constituée de verre de chalcogénure et ayant une surface latérale (2b), et un élément de retenue (3) comportant une partie de retenue (3X) qui retient au moins une partie de la surface latérale (2b) de la lentille (2), l'élément de lentille étant caractérisé en ce que l'élément de retenue (3) est constitué d'un matériau transmettant la lumière à travers lequel peut passer la lumière ultraviolette ou la lumière visible.
PCT/JP2020/023677 2019-09-27 2020-06-17 Élément de lentille, unité de lentille et procédé de production d'élément de lentille et d'unité de lentille WO2021059623A1 (fr)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08136843A (ja) * 1994-11-04 1996-05-31 Canon Inc 光偏向走査装置
JPH1195006A (ja) * 1997-09-25 1999-04-09 Fuji Photo Optical Co Ltd 光学レンズ
JP2002365510A (ja) * 2001-06-12 2002-12-18 Pentax Corp 光記録用レンズ組立体及びその収納枠並びに光記録用レンズ組立体の製造方法
JP2006194995A (ja) * 2005-01-11 2006-07-27 Ricoh Co Ltd 光源装置とその製造方法および記録装置
JP2011170161A (ja) * 2010-02-19 2011-09-01 Fujifilm Corp レンズ装置
WO2012117755A1 (fr) * 2011-03-03 2012-09-07 アルプス電気株式会社 Objectif avec barillet d'objectif et procédé de production pour objectif avec barillet d'objectif
JP2015206880A (ja) * 2014-04-18 2015-11-19 旭硝子株式会社 光学素子、および光学素子の製造方法
JP2017032799A (ja) * 2015-07-31 2017-02-09 ソニーセミコンダクタソリューションズ株式会社 半導体装置及びその製造方法、並びに、電子機器
JP2019048752A (ja) * 2017-09-12 2019-03-28 日本電気硝子株式会社 カルコゲナイドガラス材

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08136843A (ja) * 1994-11-04 1996-05-31 Canon Inc 光偏向走査装置
JPH1195006A (ja) * 1997-09-25 1999-04-09 Fuji Photo Optical Co Ltd 光学レンズ
JP2002365510A (ja) * 2001-06-12 2002-12-18 Pentax Corp 光記録用レンズ組立体及びその収納枠並びに光記録用レンズ組立体の製造方法
JP2006194995A (ja) * 2005-01-11 2006-07-27 Ricoh Co Ltd 光源装置とその製造方法および記録装置
JP2011170161A (ja) * 2010-02-19 2011-09-01 Fujifilm Corp レンズ装置
WO2012117755A1 (fr) * 2011-03-03 2012-09-07 アルプス電気株式会社 Objectif avec barillet d'objectif et procédé de production pour objectif avec barillet d'objectif
JP2015206880A (ja) * 2014-04-18 2015-11-19 旭硝子株式会社 光学素子、および光学素子の製造方法
JP2017032799A (ja) * 2015-07-31 2017-02-09 ソニーセミコンダクタソリューションズ株式会社 半導体装置及びその製造方法、並びに、電子機器
JP2019048752A (ja) * 2017-09-12 2019-03-28 日本電気硝子株式会社 カルコゲナイドガラス材

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